Patents by Inventor Kye-Uk LEE

Kye-Uk LEE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11961822
    Abstract: A display device includes a substrate including a plurality of emission areas respectively corresponding to a plurality of subpixels for displaying an image, a plurality of light emitting elements respectively located in the plurality of emission areas of a first surface of the substrate and respectively corresponding to the plurality of subpixels, a first planarization layer on the first surface of the substrate and covering the plurality of light emitting elements, and an array layer on the first planarization layer.
    Type: Grant
    Filed: December 7, 2022
    Date of Patent: April 16, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Joon Kim, Jung Hwan Hwang, Kye Uk Lee, Sang Jin Jeon
  • Publication number: 20240112626
    Abstract: A display device includes a scan write line, a PWM emission line, a PAM emission line, a sweep signal line, a first data line, a second data line, and a subpixel connected thereto, and including a light emitting element, a first pixel driver to supply a control current to a node according to the first data voltage in response to the PWM emission signal, a second pixel driver to generate a driving current according to the second data voltage in response to the PWM emission signal, and a third pixel driver to supply the driving current to the light emitting element according to the PAM emission signal and a voltage of the node, wherein the PWM emission signal includes a plurality of PWM pulses, the PAM emission signal includes a plurality of PAM pulses, and a number of the PWM pulses is greater than a number of the PAM pulses.
    Type: Application
    Filed: December 4, 2023
    Publication date: April 4, 2024
    Inventors: Jung Hwan HWANG, Hyun Joon KIM, Kye Uk LEE, Sang Jin JEON, Jun Ki JEONG
  • Publication number: 20240071299
    Abstract: A display device includes connection lines, pulse amplitude modulation (PAM) data lines configured to receive pulse width modulation (PWM) data voltages, PWM data lines configured to receive the PWM data voltages, a first connection control line configured to receive a first connection control signal, a second connection control line configured to receive a second connection control signal, subpixels connected to the PWM data lines and the PAM data lines, and a first demultiplexer (demux) unit configured to connect the connection lines to the PAM data lines or to the PWM data lines according to the first connection control signal and the second connection control signal.
    Type: Application
    Filed: October 30, 2023
    Publication date: February 29, 2024
    Inventors: Jung Hwan HWANG, Hyun Joon KIM, Kye Uk LEE, Jun Ki JEONG, Sang Jin JEON
  • Publication number: 20240038147
    Abstract: A display device includes: first sub-pixels commonly connected to a first global data line, each including a first light emitting element to emit light of a first color; and second sub-pixels commonly connected to a second global data line different from the first global data line, each including a second light emitting element to emit light of a second color different from the first color. At least one of the first sub-pixels includes: a first circuit to supply a driving current to the first light emitting element based on a first global data voltage received from the first global data line; a second circuit to control a supply period of the driving current based on a data voltage received from a data line; and a test transistor including a first electrode connected to an anode of the first light emitting element, and a second electrode connected to the data line.
    Type: Application
    Filed: April 21, 2023
    Publication date: February 1, 2024
    Inventors: Jung Hwan HWANG, Hyun Joon KIM, Kye Uk LEE
  • Patent number: 11887525
    Abstract: A display device includes PAM data lines receiving PAM and PWM data voltages, and sub-pixels connected to the PAM and PWM data lines. A sub-pixel includes a light emitting element, a first pixel driver to supply a control current according to one of the PAM data voltages to a node, a second pixel driver to generate a driving current according to one of the PWM data voltages, and a third pixel driver to adjust a period during which the driving current is supplied to the light emitting element according to a voltage of the node. A peak current value of the driving current when the sub-pixel emits a light corresponding to a low gray level region is smaller than a peak current value of the driving current when the sub-pixel emits a light corresponding to a high gray level region higher than the low gray level region.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: January 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung Hwan Hwang, Hyun Joon Kim, Kye Uk Lee, Jun Ki Jeong
  • Patent number: 11837156
    Abstract: A display device includes a scan write line, a PWM emission line, a PAM emission line, a sweep signal line, a first data line, a second data line, and a subpixel connected thereto, and including a light emitting element, a first pixel driver to supply a control current to a node according to the first data voltage in response to the PWM emission signal, a second pixel driver to generate a driving current according to the second data voltage in response to the PWM emission signal, and a third pixel driver to supply the driving current to the light emitting element according to the PAM emission signal and a voltage of the node, wherein the PWM emission signal includes a plurality of PWM pulses, the PAM emission signal includes a plurality of PAM pulses, and a number of the PWM pulses is greater than a number of the PAM pulses.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: December 5, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Hwan Hwang, Hyun Joon Kim, Kye Uk Lee, Sang Jin Jeon, Jun Ki Jeong
  • Publication number: 20230360584
    Abstract: A display device includes a first pixel driver connected to a sweep line, the first pixel driver generating a control current based on a first data voltage, a second pixel driver connected to a scan control line, the second pixel driver generating a driving current based on a second data voltage and controlling a period for which the driving current flows, based on the control current, and a light-emitting element connected to the second pixel driver to receive the driving current. The first pixel driver includes a first transistor generating the control current based on the first data voltage, a second transistor providing the first data voltage to a first electrode of the first transistor based on a scan write signal, and a first capacitor including a first capacitor electrode connected to a gate electrode of the first transistor, and a second capacitor electrode connected to the sweep line.
    Type: Application
    Filed: July 17, 2023
    Publication date: November 9, 2023
    Inventors: Jung Hwan HWANG, Hyun Joon KIM, Kye Uk LEE, Sang Jin JEON, Jun Ki JEONG
  • Patent number: 11804172
    Abstract: A display device includes connection lines, pulse amplitude modulation (PAM) data lines configured to receive pulse width modulation (PWM) data voltages, PWM data lines configured to receive the PWM data voltages, a first connection control line configured to receive a first connection control signal, a second connection control line configured to receive a second connection control signal, subpixels connected to the PWM data lines and the PAM data lines, and a first demultiplexer (demux) unit configured to connect the connection lines to the PAM data lines or to the PWM data lines according to the first connection control signal and the second connection control signal.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: October 31, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Hwan Hwang, Hyun Joon Kim, Kye Uk Lee, Jun Ki Jeong, Sang Jin Jeon
  • Publication number: 20230326932
    Abstract: A display device includes, a substrate including a first surface and a second surface opposite to the first surface; a light emitting element on the first surface of the substrate; a top surface pad on the first surface of the substrate and spaced from the light emitting element; a driving circuit on the second surface of the substrate to apply a driving signal for driving the light emitting element; a top surface connection line between the first surface of the substrate and the top surface pad to electrically connect the top surface pad to the light emitting element; an interlayer insulating layer between the top surface connection line and the top surface pad; and a side wiring on the top surface pad to connect the top surface pad to the driving circuit.
    Type: Application
    Filed: March 15, 2023
    Publication date: October 12, 2023
    Inventors: Yong Duck SON, Won Bong BAEK, Sang Woo AN, Kye Uk LEE, Won Ho JANG, Nak Cho CHOI
  • Publication number: 20230268474
    Abstract: A display device including a substrate that includes a display area and a non-display area disposed at a side of the display area. The display area includes first through fourth areas. The fourth area includes a first sub-area adjacent to at least one of the first to third areas, and a second sub-area excluding the first sub-area. At least the second sub-area includes first pixels disposed in a first direction in a first pixel row, second pixels disposed in the first direction in a second pixel row that is a next row of the first pixel row, the second pixels spaced apart from the first pixels, a clock line extending in a second direction intersecting the first direction, and a gate driver including a first stage disposed left of the clock line in a plan view, and a second stage disposed right of the clock line in a plan view.
    Type: Application
    Filed: August 26, 2022
    Publication date: August 24, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jun Ki JEONG, Hyun Joon KIM, Kye Uk LEE, Sang Jin JEON, Jung Hwan HWANG
  • Publication number: 20230268329
    Abstract: A display device includes a substrate including an emission area and a non-emission area, a pixel circuit layer above the substrate, and including a transistor and a signal line in the non-emission area, and a color conversion pattern in the emission area, a light emitting element above the color conversion pattern, and electrically connected to the transistor, an insulating layer covering the light emitting element, and a pad above the insulating layer, and electrically connected to the signal line, wherein the color conversion pattern is configured to convert a wavelength band of light incident from the light emitting element.
    Type: Application
    Filed: November 9, 2022
    Publication date: August 24, 2023
    Inventors: Hyun Joon KIM, Jung Hwan HWANG, Kye Uk LEE, Sang Jin JEON
  • Publication number: 20230246148
    Abstract: A display device includes a substrate including a display area including pixels, and a non-display area around the display area, a pad part in the non-display area, antistatic circuits between the pad part and the pixels, respectively, a first resistance line connected to the pad part and to the antistatic circuits, a second resistance line connected to the first resistance line and overlapping the first resistance line, and a fan-out line connected between the second resistance line and a respective one of the pixels.
    Type: Application
    Filed: October 13, 2022
    Publication date: August 3, 2023
    Inventors: Kye Uk LEE, Hyun Joon KIM, Jung Hwan HWANG
  • Publication number: 20230246151
    Abstract: A light-emitting display device includes a substrate, a common voltage line which is disposed on the substrate and transmits a common voltage, a first organic insulating layer which is disposed on the common voltage line and in which a first opening is defined, a connecting electrode disposed on the first organic insulating layer and connected to the common voltage line, a second organic insulating layer which is disposed on the first organic insulating layer and in which a second opening overlapping the first opening is defined, a light-emitting layer which is disposed on the connecting electrode and the second organic insulating layer and in which a contact hole that overlaps the first opening and the second opening is defined, and a common electrode disposed on the light-emitting layer and connected to the connecting electrode through the contact hole.
    Type: Application
    Filed: January 23, 2023
    Publication date: August 3, 2023
    Inventors: Sun Kwang KIM, Shin Moon KANG, Young Hoon YOO, Kye Uk LEE
  • Publication number: 20230238487
    Abstract: A display includes a first sub-pixel that emits a first color light and a second sub-pixel that emits a second color light. The first sub-pixel includes a first anode pad electrode, a second anode pad electrode, a first cathode pad electrode, and a first light emitting element including a first sub-light emitting element disposed on the first anode pad electrode and the first cathode pad electrode, and a second sub-light emitting element disposed on the second anode pad electrode and the first cathode pad electrode. An area of the first cathode pad electrode is larger than an area of the first anode pad electrode or an area of the second anode pad electrode. The first sub-light emitting element and the second sub-light emitting element emit the first color light during different periods, and the first sub-light emitting element and the second sub-light emitting element emit a same color light.
    Type: Application
    Filed: September 29, 2022
    Publication date: July 27, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jung Hwan HWANG, Hyun Joon KIM, Kye Uk LEE, Sang Jin JEON
  • Publication number: 20230238399
    Abstract: A display device including a substrate having a first side surface, a first surface, a second surface opposite to the first surface, a first chamfered surface extending from an edge of the first surface to the first side surface, a second chamfered surface extending from an edge of the second surface t the first side surface, a pixel on the first surface of the substrate and including a light emitting element configured to emit light, a first driving pad at the edge of the first surface of the substrate and electrically connected to the pixel, and a side wiring on the first surface, the first chamfered surface, the first side surface, the second chamfered surface, and the second surface of the substrate. The first driving pad has a flat portion connected to the side wiring.
    Type: Application
    Filed: January 24, 2023
    Publication date: July 27, 2023
    Inventors: Nak Cho CHOI, Yong Duck SON, Sang Woo AN, Kye Uk LEE
  • Publication number: 20230237954
    Abstract: A display device includes a substrate including a display area in which a plurality of sub-pixels are disposed, a plurality of anode electrodes respectively connected to the plurality of sub-pixels, and a cathode electrode connected to the plurality of sub-pixels and spaced apart from each of the plurality of anode electrodes. Each of the plurality of anode electrodes is disposed closer to the substrate than the cathode electrode by a height difference compensation part.
    Type: Application
    Filed: November 2, 2022
    Publication date: July 27, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Kye Uk LEE, Jung Hwan HWANG, Hyun Joon KIM
  • Publication number: 20230238493
    Abstract: A display device includes a display area including light emitting elements in a first pixel row, pixel circuits in a first circuit row and electrically connected to the first pixel row, light emitting elements in a second pixel row between the first pixel row and the first circuit row, pixel circuits in a second circuit row and electrically connected to the second pixel row, and a gate driver including a first stage disposed between the pixel circuits of the first circuit row and a second stage disposed between the pixel circuits of the second circuit row. A distance between adjacent pixel circuits with the first stage between the adjacent pixel circuits in the first circuit row is greater than a distance between other pixel circuits of the first circuit row.
    Type: Application
    Filed: August 24, 2022
    Publication date: July 27, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Kye Uk LEE, Hyun Joon KIM, Jung Hwan HWANG
  • Publication number: 20230238497
    Abstract: A display device comprises anode electrodes respectively corresponding to sub-pixels, cathode electrodes respectively corresponding to the sub-pixels and respectively spaced apart from the anode electrodes, a cathode line electrically connected to the cathode electrodes, anode pads respectively overlapping the plurality of anode electrodes in a plan view, cathode pads respectively overlapping the cathode electrodes in a plan view, and a cathode line pad overlapping at least part of the cathode line in a plan view.
    Type: Application
    Filed: December 16, 2022
    Publication date: July 27, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Kye Uk LEE, Jae Phil LEE, Hyun Joon KIM, Jung Hwan HWANG
  • Publication number: 20230238394
    Abstract: A display device includes a substrate including a first surface, a second surface opposite to the first surface, a first chamfered surface extending from one side of the first surface, a second chamfered surface extending from one side of the second surface, and a side surface connecting the first chamfered surface to the second chamfered surface, a pixel on the first surface of the substrate and including a light emitting element to emit light, a plurality of front pad parts on an edge of the first surface of the substrate and electrically connected to the pixel, a plurality of rear pad parts on an edge of the second surface of the substrate, and a plurality of side surface connection lines on the side surface of the substrate electrically connecting the plurality of front pad parts to the plurality of rear pad parts.
    Type: Application
    Filed: January 23, 2023
    Publication date: July 27, 2023
    Inventors: Kye Uk LEE, Nak Cho CHOI, Sang Woo AN, Yong Duck SON, Won Ho JANG, Jung Hwan HWANG, Myung Koo HUR
  • Publication number: 20230238372
    Abstract: A display device includes a pixel including a first light emitting element, a second light emitting element, and a third light emitting element that are arranged at equal distances from each other along a first direction, first pixel electrodes arranged along the first direction and contacting the first to third light emitting elements, and second pixel electrodes paired with the first pixel electrodes, arranged along the first direction, and contacting the first to third light emitting elements. Each of the first to third light emitting elements includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and includes a mesa area in which one of the first and second semiconductor layers is partially exposed by another thereof. The mesa area of the first light emitting element is in contact with one of the first pixel electrodes.
    Type: Application
    Filed: November 16, 2022
    Publication date: July 27, 2023
    Inventors: Kye Uk LEE, Hyun Joon KIM, Sang Jin JEON